55349921930 has 32 divisors (see below), whose sum is σ = 102265519680. Its totient is φ = 21561281920.

The previous prime is 55349921873. The next prime is 55349922007. The reversal of 55349921930 is 3912994355.

It is a super-2 number, since 2×55349921930² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375251 + ... + 501510.

It is an arithmetic number, because the mean of its divisors is an integer number (3195797490).

Almost surely, 2^55349921930 is an apocalyptic number.

55349921930 is a deficient number, since it is larger than the sum of its proper divisors (46915597750).

55349921930 is a wasteful number, since it uses less digits than its factorization.

55349921930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876934.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 55349921930 in words is "fifty-five billion, three hundred forty-nine million, nine hundred twenty-one thousand, nine hundred thirty".